Heater



J. F. SLOAN July 4, 1933.

HEATER Filed April 19, 1929 Patented July 4, 1933 UNITED stares Joan r. swan, or rnonm. rumors a ucauonmed Add 1a, 1929. Serial No. 856,891.

My invention relates to heaters and more specifically to heaters for internal combustion engines.

One of the objects of my invention is to provide a heater for automobile en ines which will facilitate easy starting 0 the motor, and kee ing the lubricating oil-and grease from sti ening or congealing.

A further object is to provide such a construction in which the desired result is accomplished by restricting or hindering the flow of liquid away from the heating element so that the liquid is heated to a relatively high temperature and the circulation of liquid in the water jacket is relatively slow thus causing a relatively large proportion of the heat available to be applied in heating the engine block and a relatively small proportion to be delivered to the radiator. Further objects will appear from the description and claims.

In the drawing, in which an embodiment of my invention is shown-- Figure 1 is a side elevation of an internal 7 combustion engine and its cooling system with my heater applied thereto;

Fig. 2 is a section substantially on 2-2 of Fig. 1;

Fig. 3 is a section substantially on t e line the line e e 3 of Fig. 4; and

Fig. 4 is a section substantially on the line 4-4: of Fig. 1.

Referring to the drawing in detail, the

. construction shown therein comprises an '35 engine block 1 of an internal combustion engine having a water jacket 2 surrounding the cylinders 3, a radiator t in communication with the water jacket through the conc duits 5 and 6, a pump 7 for effecting a circulation of the liquid in the water jacket, and a heater 8 for communicating heat to the lf quid in the water jacket.

This heater comprises an electric heating element 9 and a cylindrical housing 10 therefor both mounted on a screw plug base 11 which is threaded into a tapped opening in the side of the engine block. The electric heater element 9 is supplied with current by means of the feed wires 12.

" In order to accomplish the objects of my bustion engine having a water jacket, of a invention; I find it desirable to cause the temperature of the liquid, adjacent the heating element to be raised to a comparatively high degree and this I accomplish by preventing a too rapid flow of liquid away from the heat N ing element 9. S ecifically, this is encomphshed by providing a relatively restricted opening 13 in the top of the cylindrical housmg 10 surrounding the heating element 9 so that the heated liquid in this cylindrical chamber cannot escape quickly and is therefore, raised to a relatively high temperature before it can escape through the restricted opening. The cooler liquid flows into the housing 10 through the larger opening it in m the lower side or the casing and upwardly and rearwardly around the heating element to the relatively small opening in the upper part ofthe housing as indicated by arrows A. W By impeding the flow from the housing I correspondingly lessen the flow from the block thus retaining the hot solution and correspondingly increasing the temperature of the block. If an immersion heater of corresponding wattage were inserted into the block without any impediment tothe flow it would cause a more rapid circulation of the solution which would be, of lower temperature and the block would be heated to a correspondm ingly low temperature.

While I have shown but one form of my invention, many modifications may he made therein without departing from the spirit and scope of the appended claims.

I claim l. The combination with an internal combastion engine having a water jacket, of a' heater in said Water jacket comprising an electrical heating element which causes the water heated thereby to rise'in the jacket, and means for causing a relatively high rise'in temperature in the water adjacent said heating element comprising retarding means for retardingthe rise of the heated water, said retarding means comprising a housing about said heater insulated from the heater circuit and having a restricted opening to permit a restricted upward flow of the water.

2. The combination with an internal comheaterinmii water iacket comprising an cireuit and having a restricted opening to permit a. upward flow of they water, said hou and heater element being assembl'ed' as a unit and mounted on a screw I plug h'ase threadefl into the In witnessv whereof, I have e reunto subacribed my name.

JOHN F. SLOAN.

linder block. 

